中考物理练习题电路主点(二)

《中考物理练习题电路主点(二)》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

ᱥᳮᵯ⚪ᔁ⌱⚪ᐳ10⚪1.᝞ᵬὶᙠᵯ
ᵯᵯ6V,L1Ḅ!ᵯ3V,L2Ḅ!ᵯ2V."#Ḅᵯ$%ᐸ'ᵯḄᐵ)᝞*ᡠ,-ᔠ/ᐵ012345ᘤḄ2ᱏ28
9:ᐸ
;<=>ᐝ@;ABCDᑡFG
ᐝḄIL2,ᐸ!K᳛0.3WB.<=>ᐝḄILiᐸ!K᳛0.45WC.1L2'ᵯ1.5V:"#MḄᵯ$0.15AD.N:2345ᘤ'ᵯI1.5V2.᪗ᨵ"6V3.6W"Ḅ"#MḄᵯ$Q'ᵯḄ4ᓄᐵ)᝞ᡠ,STUVWXḄYὶZᙠ6VḄᵯ'ᑣ\YḄ]▭ᵯ5_]▭K᳛ᑖa01234S6UZVA.10Q0.9WB.6Q0.9WC.6Q1.5WD.10Q1.8W3.᝞12345ᘤZᐭᵯᵯ5Ḅ5cR:ᐸdὑḄK᳛I30W1Zᐭᵯᵯ5Ḅ5c3R:ᐸdὑḄK᳛AfgIA.10WB.20WC.30WD.80W4.᝞ᡠ,ᵯᵯᵯhᢝA412345ᘤḄ2ᱏ2ᑮc9:ᵯ⊤,ᦪ4V,L<=>ᐝm12345ᘤḄ2ᱏ2ᑮb9:ᵯ⊤Ḅ,ᦪI8V.noLḄᵯ540,ᵯ5Rac=LRabᑣLḄ!K᳛I41

1

2A.12B.53C.259D.25189.L³᪗ᨵ"6V6W"´᪵¶·¸Ḅᵯ$Qᵯ4ᓄᐵ)᝞ᵬᡠ,.¹TLZᐭ᝞*ᡠ,Ḅᵯ
Sᵯᵯ10VA4ᵯ$⊤Ḅ"00.6A",ᵯ⊤Ḅ"015V”.ᑣDᑡFGᐝ:ᵯ⊤Ḅ,ᦪ6VB.1ᵯ$⊤,ᦪ0.4A:ᵯ⊤Ḅ,ᦪ9VC.LḄᵯ5cQᵯ⊤Ḅ,ᦪḄºᜧ¼ºᜧD.½hᵯ¾ᐰ᦮ᵯdὑḄᨬᜧK᳛6W10.,ᵯ
ᵯឤ$gÂÃÄÅᜧឤ!Ḅᵯ$Ro!cᵯ532345ᘤRḄ2ᱏᑣDᑡ⊤,ᵯ⊤,ᦪUஹᵯÆK᳛PQᵯ$⊤,ᦪI4ᓄḄᐵ)Ç
fgÏK᳛Poஹ2345ᘤRdὑḄᵯK᳛PR_ᵯÆK᳛PuQᵯ$I4ᓄḄᐵ)"Ḅ]Ðᵯ"#]зᑮḄᦪÑᵨÓ9Gᙠ;ᙶ᪗)
ÕÖ½aஹbஹc×ᩩÇ᝞*ᡠ,.᪷ÑÚfoᐸ
Û᧜ᵯḄÆK᳛PuQᵯ$I4ᓄḄᐵ)ÚI—⌱É"a"ஹ"b"ᡈ"c",2345ᘤRdὑḄᨬᜧᵯK᳛W.3

312.᝞I;VᵯÏᨨàáâᐸã⌕åᦪᨨàáᑁᨵçâèÏᐗêë⌱ᵨçÕᔾÏᡈíÏᱥîIïçḄ—ðᜧ⌱É"ñò"ஹ"¨Ïó"ᡈ"î".¦ᵨô⌕ᐜöᨨàá"ᵯèÏᎷøᡠdὑḄᵯgᨵ70%ùᓄçḄᑁgᑣᙠ!ᵯDçᵫ15ûèÏ8ü3ýᵯN#
dὑḄᵯgIJ,ᡠ◤⌕ḄèÏ:s.[cç=4.2Xl
3j/kg.].0
ᡡᧅ⌕ᦪᑁ
Ḅ1kgᵯ220V᳛500W65-C*13.ᵯÿᰄஹᵯᵯᧅᑖ᪗ᨵ“220V1000W"ஹ"220Vl800W”"220V500W”Ḅ᪵ᔜ—⌱"ᵯ!ᰄ"ஹ"ᵯ"ᡈ"ᵯᧅ”$%&Ḅ'(ᨬ*.᪗ᨵ“220V1000W”Ḅᵯ!ᰄ0.2h,ᵯ,ᡠ.Ḅ/0kWh.14.236ᨴᡃ678"9ᦔ;”<=>Ḅ?@᪗A78ᑴC"9ᦔ;"EERDᢣ78ᑴC(FᑴCGὑḄᵯ/᳛;.JKL◤⌕OPᑴC(03200WḄ78Q⌱"9ᦔ;"03.2Ḅ78ᑣᑴCGὑḄᵯ/᳛0—WQ⌱"9ᦔ;"04.0Ḅ78lhS;T78⁚Vᵯ9kWh.15.WᐶYJZ[\]᝞_ᵬᡠaḄᵯbc=

417.᝞_ᡠa0Wᵯ'ᘤḄTᳮa_'ᑖᵫRiR2Zᡂஹᐵi'ᘤᜐ"'"ᡈ"”᝱.SiஹᔠSᵯ'ᘤᜐ᝱.¡¢'ᘤḄ'/᳛01000W,⌕£10kgᵫ18¤'ᑮ680,'0s.c=4.2X103J/kg«l3
,'¦zḄ'(ᐰ¨©ᔾᦈ$¬.

51$Jäëᑮᵯb_ìzOÝíîÂïᓄᵯ⊤ᵯ?⊤@ᨵBᦪᢥ᯿Ḅᵯ(0&ᑨG⌕I:;JᐝḄLMNO—.P᦮ᵯ(1RS7T+,ᙠP⁚ᘤḄV%:;WᯠᰐZᵯ?⊤ḄBᦪWᯠ[.Bᦪᵯ⊤ḄBᦪN6V,ᑨGᦑ_`aNO—.5cde2f9:;=ghᵯḄᐵijklm+,n᪷p+,ᦪpqrk9:;ḄU-Iw᝞yᡠB.{᪷pw|}~r9:;Ḅf᳛N—W..~⚪ᐳ19⚪20.ᵬPᵯᧅᐸᓄḄᵯ(y7ᐵ7ᐵNᵫ@ḄᱏᱏᙢᙠdjᡂḄ.ᵫ¡ᱏ¢£[¤ᱏᜧ¥¦§ᱏ¨ᔣᱏª«¬g®¯¬[®°±.¥¦§ᱏ²³Ahµឋ·ᱏ¸Ḅ²³BºᩭN¼Ḅ¼ᵯSᢣB:L=R▲?ᵯJÁJ¦§ÃÁgᓣ¯.Ågᓣ¯ᑮÇfgAஹB²³ᑖÊᵯ(G7ÃÁḄg<ᙠᓣ¯ËḼgḄÍÎ¥¦§ᱏ⌲ÐឮÒºÓAஹB²³ÔÕÖ&²ᵯ(×m&¼ÃÁḄgÔ7Tᓣ¯ØÙ+ÚḄÛḄ.1ᵯᧅḄ7ᐵNÝpÞßᱥᳮâãᑴᡂḄå2<æᱥ◤⌕<Ḅègé◤⌕ê¯Ḅèg᝞ëP⁚Pìíå3éᢣB:Lîᵨ"3V0.03W”Ḅ9:;ªß▲?ᵯRlᜧñaÂ9:;1RòMå4JÁḄf᳛1000W,ᑣJÁḄᵯlᜧåé⌕¦§ÃÁḄgᵫ20E1ᓣ¯ᑮ22012õö◤⌕l÷妧ÃÁḄø$1kg,¤û0.4X103஻kg.ᒹ,<~$ÿᜫ
.⚪ᐳ6⚪
21.᱆᱆ᙠᖪ⌱ᵯᘤḄᵯ!"#$%᝞"ᡠ("R*+ᵯ,ᐸᵯ,./012ᓄ
ᑣ56

6ᵯ
ᘤ785DSI—*1B9:ᵯ/5220T<:⚣᳛5501lz?:@᳛54000«■BCDIPVEᵨᡝH0IJKᳫM3XJOE.ᱏWK%஺CᵯPQRᡈ⊤18ᱣ""I☠ᡃXY1ᵯᘤZ[\ᵯ!ᵯ]*^ᜧ`abcᶇeᦪ

2ᵯᘤZ[15min,+ᵯ,RgὑḄᵯi*^jkWh?3᪷l⚪ᵯ!"mnop+ᵯ,Ro#qprᐵSiஹS,uovwᵯᘤx2yᵯ!ᦋ{.|}⌕5.⁚ᵯᘤḄ:@᳛.ᜩ:@᳛*2000W,᧡ஹq:@᳛*4000W,:@᳛*6000W,uᦋ{Ḅᵯ!"}Ro.4ᐰᵨᵯὃ⇋᝞bwᵯᘤ{ᑮᵯ!i⌼ᡂb`ᑏ■-¤
22.¥ᨵqpᵯ,ᐗJᐸp*ᵫ©ªᩞᧇᑴᡂḄḄᵯ,/0Ḅᓣ¯1°ᜧ±p*ᵫ²³´ᩞᧇᑴᡂḄᐸᵯ,/0Ḅᓣ¯1µ.¥vᐸpᵯ,ᐗJRoxy¶·¶¸ᐸᵯ]¹+ᙠqºḄᵯ»¼¶·ᦪl᝞½⊤5¾ÂQ¾ÂþÂľÂ¾ÂžÂƾÂǾ¾ᦪᱥᳮÁU/V0.400.600.801.001.201.401.601.80I/A0.200.450.801.251.802.453.204.05
1u᪷l⊤ᦪlᑨÉᐗJRoi*ᵫHÊËÌᩞᧇᑴᡂḄ`ÍÎᳮᵫ.2Ï:¼ᵯ,R#ᐗJRoᐭ᝞"ᡠ(Ḅᵯ!Ñᔠrᐵᵯ]⊤ÓᦪÔ1.8A.ÕÖᵯ!ᵯPᵯ»ឤÔ3V,Ø\:¼ᵯ,RḄᵯ@᳛Ô^ᜧ`3ᑖ᪆⊤ᦪlᑏÛÜᐗJRoḄᵯ]I#ᐗJRoqºḄᵯ»UÝÞḄᐵß.RoR—ᔠHi—23.
1"36V25W”ḄàáZ[âᐝ\Ḅᵯ,*^j`
2äåᵫæ綸“36V25W"àáḄᵯ]#ᵯ»ᐵßèé᝞"ᵬᡠ(uë5জíîØïðàáñὶíópᐭ220Vᵯ!ôᵨᑣõj⌕ñὶ^jp`ঝ÷11pø᪵Ḅàáñὶᐭ220VḄᵯ!\uaᔠ"é}úpàáḄæ▭@᳛*^j`3±ᨵüàáüiýþ$%HḄ:ᵯ»Ô36V,îᐸᐭ᝞"ÿᡠ
ᵯ.ᔠᐵS,ᘤᱏCᐝḄᵯ᳛P,ᱏᨬ"#b$▭ᵯ᳛P&'PP=169,(ᡠ)ᵯ*ᵯ+U,-./0ᵯ12347

71(A)JU24.:;✏=>├@AᔜᙢDEF✏=◤⌕IJᕣL.᝞N"PQ"R✏=EFᛛᧇUVᑁḄᵯNLY᪗ᨵ"220V,100W".aᜩcdefᜩὑᵯhijkᵯl)mino⊤03ὃ⇋RiR2uḄᓄ4ycKiஹJஹK3ᙳᔠ10~ὑᵯ11fᜩJᔠKiஹJᙳ14~ὑᵯ5.6(w014R2Ḅux024RiḄu.⁚*.ᙠᐵ~ᵯḄᑖᓄᵯᙠᵯ.⊤ᡠ
Ḅᑖᢈᦪᐸᦔ᳛ᢣ¤¥ᐵ¦§¨©ḄªᵯᓄᵯḄᦔ᳛.ὑ«¬ᢣ¤¥100km¯ὑ°«Ḅ±².³´ᐜ¶¤¥ᯠᐵᑖ¸³¹ºeᐵᵯ»EhioḄªs½¾¿Ḅᜧ~v,ÂùEkŹEk-sNÇ᝞Nᡠ
.XXÉʬ0kg41200ᦔ᳛0Ì460ὑ«ᚗ10(L/100km)014ᵯ᪷Ò—ÔᳮᵯḄ.ᵯª◀×ᓄᵯ᜜ᵫÚᙌᨵᵯÜᨵᑖ¬ᓄ—.024¤¥100km,¯ὑ°«Ḅʬ—kg,Ýᐰ°ßàá°«âãḄ䬗J0°«Ḅåp=0.7X103kg/m3,äuq=4.6X107J/kg4.034³´ᙠᜧ~800NḄᱫíîÅᵨoj25m/sḄ¤¥1000m.ª.A.ñᑮḄî1.2X1
4JB.¤¥Ḅô40sC.ᱫíîöḄ3.2X1048j8

8D.ᱫíîḄ᳛80kW044ᵫNÇù'⊤
ºᵯú¤³´ḄNÚ—0û"জ"ᡈ"ঝ"4ᑨḄ■5ḄEko=3.75Xl5j,ᐵ!"#$%"ᵯ#'()*$ᨬ,ᨵ—JḄ0ᓄ2ᑁ.26.▅78ᦻ$:;<⚪.■?@ᙠ$"#ḄBCDᓣFGH.2IJKLᐰ$NᵨPQRSTᓾ.V▭X$PYZZ[⌕]ᐭ_᧕ᢵ"Ḅ■?@b@$]ᐭ■?@cḄdᔠ@fᜩ_h᧕ij$kl'm_h᧕no.ᨵᐵpᧇ⊤s$■?@tPᢥ_%Ḅvwdᔠ$dᔠ@Ḅijxஹnx_%$ᐹ{ᦪ}~⊤⊤Y■?@ᢣ■?@ᙠdᔠ@Yᡠᓰ{Ḅᑖv.■?@30405060708090dᔠ@Ḅijx:-17-28-37-49-48-46-28dᔠ@Ḅnx:103104107111117124141ᙠPY]■?@$dᔠ@Ḅijxvᙢ¡ᨬ¢£B¢10~150.ὃ⇋ᑮdᔠ@vhḄDᦣᦔ$$dᔠ@Y■?@Ḅ_H.121"#ᵨPᩭTᓾ$©2PḄ—ªᜧ.2ᙠdᔠ@Y$᝞■?@ᵫ30%⌲°±ᜧᑮ90%,ᑣdᔠ@ijxḄ³ᓄ´µ.A.⌲°ᓣHB.⌲°¹¢C.ᐜᓣHc¹¢D.ᐜ¹¢cᓣH3ᙢ¡ᨬ¢£B2-15:$½¾ᙢ¿ᩭÀ$ᙠᑡ_%■?@Ḅdᔠ@Y,⌱—.A.30%B.40%C.60%D.90%9

9(4)ÃᙠÄ2Y*Ådᔠ@nxt■?@ḄᐵÆÄÇÈᵫÄÇNÉÊË$■?@ḄÌᑮ75%$dᔠ@ḄnxᜧÍ—0.(5)klᵨc$PYḄdᔠ@DÎ.tbᩭÏv$dᔠ@ḄnxÐ(⌱Ò“ᓣH"ஹ"¹¢"ᡈ"_³")$ᐸb.10

10ØYᱥᳮᵯÛÜ⚪Ýᔁὃᫀ"#⚪%᪆Ð.⌱ß⚪ᐳ10⚪1.2014•âã᝞Äᵬ$åæçèéὶᙠᵯëY$ᵯìᵯí26V,L1Ḅðñᵯí23V,L2Ḅðñᵯí22V.òåæçèḄᵯótᐸåôᵯíḄᐵÆ᝞Äõᡠö$!ᔠ'ᐵc$÷ø³ùᘤḄøᱏøüYx$ᐸYÐæçè"ᐝ$þÐæ_ÿ
ᑡḄA.ᐝḄL2,ᐸ᳛0.3WB.ᐝḄLi
ᐸ᳛0.45WC.'L2()ᵯ+1.5V.
/01Ḅᵯ20.15AD.4.5678ᘤ()ᵯ+1.5Vூ;<௃;>1ᵫ@ABC
LiḄᵯ+3V./0Ḅᵯ20.15A,L2Ḅᵯ+2V./0Ḅᵯ2ᜧE0.15A,FGὶᵯIᔜᜐḄᵯ2LM
NᐸOPᐝ
QOPRS
ᡠU
ᐝḄLi
ᐸ᳛Pi=5h=3VX0.15A=0.45W,ᦑAR
B[2ᵫ@ABC
'ᵯIḄᵯ20.15A.
L\()Ḅᵯ+3V,L2()Ḅᵯ+1.5V,ᦑC[FGὶᵯI]ᵯ+MEᔜᑖᵯ+_`
ᡠU
5678ᘤ()Ḅᵯ+>U5=U-Ui-U=6V-3V-1.5V=1.5V,ᦑD.2ᦑ⌱BCD.2.2011ᓝᛆ᪗ᨵ“6V3.6W"Ḅ
/01Ḅᵯ2k()ᵯ+Ḅ7ᓄᐵn᝞@ᡠp
qrstuvḄ(wGὶxᙠ6VḄᵯz()
ᑣ|wḄ}▭ᵯ8`}▭᳛ᑖA.10Q0.9WB.6Q0.9WC.6Q1.5WD.10Q1.8W11

11ூ;<௃;:rstuvḄ(wGὶxᙠ6VḄᵯz()
|w()Ḅᵯ+3V,@ABU
4.ᵯIᵯ20.5A,ᡠU|wḄ}▭ᵯ8R=U=a_=6Q,I0.5A|wḄ}▭᳛P=UI=3VXO.5A=1.5W.ᦑ⌱C.3.2011•ᩈ᝞@
'5678ᘤxᐭᵯIᵯ8Ḅ8R.
ᐸὑḄ᳛30W['xᐭᵯIᵯ8Ḅ83R.
ᐸὑḄ᳛RBA.10WB.20WC.30WD.80Wூ;<௃;:ᵫ⚪B>'5678ᘤxᐭᵯIḄ8R.
ᐸὑḄ᳛:2XR=(ߟy——)2X9R=30W[3RQ+3Rᑣ(ߟy—)2X3R=l0W[3R+3R0'5678ᘤxᐭᵯIḄ83R.
ὑḄ᳛:P
=(---)2X3R>(--——)2X3R=10W,RQ+3R3RQ+3RᦑBCDB
ARB.ᦑ⌱A.4.2006•£□¥᝞@ᡠpᵯI
ᵯzᵯ+¦ᢝR7
'5678ᘤḄ5ᱏ5ᑮc«.
ᵯ+⊤pᦪ4V,Lᐝ['5678ᘤḄ5ᱏ5ᑮb«.
ᵯ+⊤Ḅpᦪ8V.¯CLḄᵯ84Q,ᵯ8Rac^Rab
ᑣLḄ᳛)A.2WB.4WC.8WD.16Wூ;<௃;>1±ᵯzᵯ+U,ᑣ5ᱏᙠc«.
ᵯIᵯ2-,4.ᵯ+²+RacU⊤pᦪU|=LRac=XRaC=4VজRL+Rac12

125ᱏ5ᑮb«.
ᵯIᵯ2ூ2=^^—ᵯ+⊤pᦪ>U2=l2Rabஹ2—XR=8Vab%+Rab%+Rab-----------ঝµRL=4C,Rac=LRab¶ᐭ
·ὶ¸জº»ঝº>4Rac=2Q,Rab=8Q,µRac=2C¶ᐭজº>U=12V[2'5ᱏᙠc«.
ᐝ
4.()Ḅᵯ+UL=12V-4V=8V[2TTUL_(8V)Ḅ᳛P=-=16W.R40Lᦑ⌱D.5.2005•ᓝᛆ᝞@ᡠp
ᵯzᵯ+R7
RoOP8cḄᵯ8.᝞½ᑖµᑡḄ¾PR¿uvḄxᐭᵯIḄAB(«_À
NRÁÂ.ᑣᨬÄḄÅOPOA."6V,3W"B."4V,2W"C."3V,3W"D."2V,2W”ூ;<௃;>᪷ÈɺR=U2+P,BÊËRA=12Q,RB=8C,RC=3C,RD=20,ᵫEᵯzᵯ+R7
B᪷ÈP=FR=2&'R=8஺.
ᵯ᳛ᨬᜧ.R+8Qᦑ⌱B.6.2016ÍÎ᝞@ᡠp
ᵯzᵯ+4.5V,ᵯ+⊤ÏÐ"0-3V",ᵯ2⊤ÏÐ"0-0.6A",5678ᘤuv"10CHA",L᪗ᨵ"2.5V1.25W"Òᵯ8R7
ᙠ¦ÓLᵯ2RÔ0ᵯ2ḄÕÖ
×65678ᘤḄ5ᱏ
ᑡḄজḄᵯ20.6Aঝ5678ᘤØᐭᵯIḄ87ᓄÚ4C-10Qঞᵯ+⊤pᦪ7ᓄÚ0-3Vটᵯ2⊤pᦪ7ᓄÚ0.3-0.5A.A.wᨵঝஹটB.wᨵঝஹঞC.wᨵজஹটD.wᨵজஹঞூ;<௃;>ᵫᵯI@BC
»5678ᘤGὶ
ᵯ+⊤Þ5678ᘤ()Ḅᵯ+.1ᐝ.Ḅᵯ+2.5V,᳛1.25W,[_PL_1.25WᵫP=UIB>ᐝ.Ḅᵯ2:=0.5A,ᦑজ┯à;U2.5VL13

13
2'ᵯIḄᵯ2OSA.-
5678ᘤᵯ8ᨬᑖᵯ+ᨬGὶᵯI]ᵯ+MEᔜᑖᵯ+_`
4.ᵯ+⊤ḄpᦪUXU-UL=4.5V-2.5V=2V,ᦑᵯ+⊤Ḅpᦪ7ᓄÚ23V,ᦑঞ┯à[2V<3V,âᨵÔᵯ+⊤ḄÏÐ
()Ḅᵯ+BUãᑮ2.5V,GὶᵯIᔜᜐḄᵯ2LM
4.5678ᘤxᐭᵯIḄᵯ8ᨬ
ᨬ>'ᵯ+⊤Ḅpᦪ3V.
ᵯIḄᵯ2ᨬ
5678ᘤxᐭᵯIḄᵯ8ᨬᜧ,()Ḅᵯ+>UL'=U-U5max=4.5V-3V=1.5V,Ḅᵯ8>RL=21¥ä=5Q,I0.5ALᵯIḄᨬᵯ2:ᵯIᵯ27ᓄḄÚ0.3A0.5A,ᦑট;5678ᘤxᐭᵯIḄᨬᜧ8>5678ᘤ87ᓄḄÚ4c10C,ᦑঝ.ᦑ⌱A.7.
2016•åæ᝞@ᡠpḄᵯI
ᵯzᵯ+¦ᢝR7.çᔠéᐵS,×65ᱏ
êᵯ+⊤Vipᦪ»ᵯ+⊤V2pᦪ_ë21,4.R2Ḅ᳛P1;ìí×65ᱏ
êᵯ+⊤Vipᦪ»ᵯ+⊤V2pᦪ_ë12,4.R2Ḅ᳛P2ᑣPlP2!A.14B.12C.11D.41ூ;<௃;>ᙠî1tÕÖ
R2()Ḅᵯ+U2i=U=U,Ri()Ḅᵯ+U“=U-ï2+13-2U3ᙠî2tÕÖ
R2()Ḅᵯ+U22=-Z—U=2U,R|Ḅᵯ+U12=U-NL=U,1+2333᪷Èᵯ8R7.
/0Ḅᵯ2»ᵯ+ᡂë,14

14ᡠU
(tÕÖ/0RiḄᵯ2_ë2=ñ=2,ᓽ(tÕÖ/0R2Ḅᵯ2_ë;¸O%xLiôõ2=1P2^22X112211ᦑ⌱C.8.2016•⍳÷᝞@ᡠpḄᵯI
ᵯzᵯ+R7
éᐵSçᔠ
5678ᘤ5ᱏPᙠa).
ᵯ2⊤Ḅpᦪ2.4A,ᵯ+⊤Ḅpᦪ12V5ᱏP×6ᑮ«.
RiὑḄ᳛Pi;5ᱏP×ᑮb«.
RiὑḄ᳛P/PiPJ=259,5ᱏPᙠ«`ᙠb).
R2ὑḄ᳛_ë!øaR2b1-{V-A.12B.53C.259D.2518ூ;<௃;>᪷ÈᵯI@BC
ᵯ8Ri»78ᘤR2Gὶ
ᵯ+⊤ÞÏRi()ᵯ+
ᵯ2⊤ÞÏᵯIḄᵯ2[±5ᱏP×ᑮ78ᘤ«`b«.ᵯIḄᵯ2ᑖIH12,PlIùT19R¯CPiPi'=259,ᵫP=FRB>—4—=——=-^=ú[Iû,3±5678ᘤR2Ḅᨬᜧ8R,5ᱏPᙠ«`ᙠb).
R2ὑḄ᳛_ë:ᦑ⌱D.9.2012•üýL᪗ᨵ"6V6W"þ᪵
Ḅᵯᵯᓄᐵ᝞ᵬᡠ.Lᐭ᝞ᡠḄᵯᵯᵯ10Vᵯ⊤Ḅ"#“00.6A",ᵯ⊤Ḅ"#"015V”.ᑣ%ᑡ'()*Ḅ+42023456A.L)-.ᐝ0ᵯ⊤Ḅᦪ6V15

15B.3ᵯ⊤ᦪ0.460-ᵯ⊤Ḅᦪ9VC.LḄᵯ<=ᵯ⊤ḄᦪḄ>ᜧ@>ᜧD.BCDᵯEᐰ᦮HᵯIὑḄᨬᜧL᳛6WூQR௃QT1)-.ᐝ0ḄᵯUL=6V,•••Zὶᵯ\ᵯ]^ᔜᑖᵯabᡠcL)-.ᐝ0ᵯ⊤ḄᦪTUR=U-UL=10V-6V=4V,ᦑA)*g2ᵫjkl3l=0.4A0UL=1V,g.UR=U-UL=10V-1V=9V,ᦑB)*g3ḄᵯᜧᓽtuḄᵯvᜧ0w▭L᳛vᜧopvrᵯᜧ@{zᦑC)*g4ᵫjkl3)-.ᐝUL=6V0ᵯḄᵯ1AA0.6A,ᵯḄᨬᜧᵯI=0.6A,ᵯIὑḄᨬᜧᵯL᳛Pmax=UImax=1OVX0.6A=6W;ᦑ⌱BD.10.2015•ᓭᵯᵯឤᜧzឤḄᵯRo=ᵯ<<ᘤRḄᱏᑣ%ᑡ⊤ᵯ⊤ᦪUஹᵯ\L᳛Pᵯ⊤ᦪIᓄḄᐵk)*Ḅ+ூQR௃Q:ᵫRoRὶᵯ⊤
ᵯᵯᵯ⊤
RḄᵯ.ᵯḄᵯឤI\ABஹ᪷ὶᵯᱯklTU=Uo=IoRo=I\-1Ro=-IRo+I&Roᐸ1\ஹRo=ᵫU=-RI+I\Ro,klUIḄj£¤¥ᦪ¦-Ro

16³´⚪ᐳ7z⚪11.2016•ᑁ¹᝞ᵬᡠ+º¯»"½¾=ᵯ

17)
ᡡᧅ⌕ᑁ
Ḅ1ᚈᵯ220V᳛500W65+JூFG௃F:(1)KḄLMNᜧPQRSḄTUVWḄXYᡠZᵯᨨ[☢]^ᵨ`aᱥcd(2)TUe15fᓣhᑮ65"'()*ᔾᦈḄX+Qw=cmAt=4.2X103J/(kg«S)XlkgX(650-15S)=2.1X105JᵫÀ:wὑḄᵯ:53X1ᑣ34t=^-=°J=600s.P500WᦑGᫀnLMd3X1()5600.13.(2013•ᡂq)ᵯsᰄஹᵯvwᵯxᧅᑖ{᪗ᨵ“220V1000W"ஹ"220Vl800W"w"220V500W”Ḅ}᪵ᔜ$`RS34ᵯv(⌱"ᵯsᰄ"ஹ"ᵯv"ᡈ"ᵯxᧅ”)ḄXᨬY.᪗ᨵ“220V1000W"Ḅᵯsᰄ`0.2h,ᵯᡠḄ0.2kW»h.ூFG௃FnজᵯsᰄஹᵯvwᵯxᧅᵨᵯᘤqᵯὑḄᵯᐰᓄXe⚪Pᵯsᰄ=1000W,Pᵯ⊤=1800W,Pᵯxᧅ=500W,ᓽPᵯPᵯsᰄPᵯxᧅ,`Ḅ34RSᵫQ=W=PtᵯvḄXᨬY.(2)VP=1000W=lkW,t=0.2h,ᵯᡠḄnW=Pt=lkWX0.2h=0.2kW«h.ᦑGᫀnᵯv0.2.14.(2013•¡¢)£¤6ᨴᡃ§¨©"ᦔL”«¬Ḅ®¯᪗°¨©ᑴ²"ᦔL"EER+ᢣ¨©ᑴ²X´ᑴ²3ὑḄᵯ᳛L.¶·¸◤⌕]¹ᑴ²X3200WḄ¨©º⌱"ᦔL”3.2Ḅ¨©ᑣᑴ²ὑḄᵭ᳛1000Wº⌱"ᦔL"4.0Ḅ¨©`lh¼L½¨©⁚¿ᵯ0.2kWh.ூFG௃Fn1•ᦔL+ᢣ¨©ᑴ²X´ᑴ²3ὑḄᵯ᳛LᦔL3.2Ḅ¨©ὑḄᵯ᳛nPᑴ-3200WP1-•=1000W,3.23.218

18ᦔL4.0Ḅ¨©ὑḄᵯ᳛nᑴ(¨L800W,4.04⁚¿Ḅᵯ᳛nP=P1-P=1OOOW-800W=200W=0.2kW,2`lh⁚¿ḄᵯnW=Pt=0.2kWXlh=0.2kW«h.ᦑGᫀn1000d0.2.15.
2013•⍳ÂCÃᐶŶÆÇÈ᝞ÊᵬᡠÌḄᵯÍά«ÏÐÑᵯÒᵯ©ḄÓᵯÒ¶ÔÕL᪗ᨵ"6V1.2W"}᪵R20cḄÖᵯ.¶Æ᪷ØÙÚḄᵯ⊤wᵯ⊤ḄÌᦪÜᓄÝÞW᝞ÊJᡠÌḄI-UᐵàÊ.áᵯ⊤ḄÌᦪ2V3(¶ÔÕLḄᵯ0.3A,©⁚ᵯÒᵯáᵯÍὑḄã᳛1.35W3¶ÔÕḄ«▭᳛0.9W.电压可调学生电源ᵬJூFG௃FnᵫᵯÍÊÔÕLᵯRäὶᵯ⊤æäὶᑖçèḄᵯᵯ⊤æéÍ*Ḅᵯ.@1ᵫJÊêáᵯ⊤ḄÌᦪ2V3ᵯ⊤ḄÌᦪᓽéÍᵯI=0.4A,•••äὶᵯÍ*ᔜëÍçèḄᵯR®ᵫìíîÀ(RḄᵯnu^vlR===01ACR20Q,/äὶᵯÍ*éÍᵯ®ïᔜëÍᵯðw(¶ÔÕLḄᵯnIL=I-IR=0.4A-0.1A=0.3Ad
2ᵫJÊêᵯÍᵯÍᵯI=0.45A,ᵯÒᵯU=3V3¶ÔÕ´ÖᵯRoὑḄã᳛P.=UI=3VX0.45A=1.35W,a'3(ÖᵯḄᵯn(ÔÕḄᵯnIL'=I'-IR'=0.45A-0.15A=0.3A,ᑣÔÕḄ«▭᳛nP5U'IL'=3VX0.3A=0.9W-ᦑGᫀn0.3d0.9.19

1916.2013•ñ□C᝞ÊᡠÌᵯÒᵯóᢝõÜRiR=l4.ö÷ᔠSi3ᵯ⊤ḄÌ2ᦪ0.1A,RiὑḄ᳛Piö÷ᔠS23RoὑḄ᳛0.1W,R2ὑḄ᳛P2,ùPiP=l1.ᑣRoᐜûçüὑḄ᳛ðL2ூFG௃Fnö÷ᔠSi3Ro´Riýὶᵯ⊤æᵯÍ*Ḅᵯdö÷ᔠS23Ro´R2ýὶdVP=I2R,ùR1R=l4,202I2RT2R2J24122FÀn121RoᐜûçüὑḄ᳛ðLn2PQþÿ11!2_2!2_4P0I2RT21120ᦑ
ᫀ41.17.2012•ᡂ᝞ᡠᵯᘤḄᳮᑖᵫRiR2ᡂஹ!"ᐵ$%&ᘤᜐ("*"ᡈ",-".᝱.!"S1ஹ1ᔠS3.ᵯᘤᜐ(,-.᝱.567ᘤḄ*8᳛1000W,⌕;10kg<18=*ᑮ68=*3?2.1X©
C*=4.2X103J/kg»0!,@AḄBᐰDEᔾᦈூI
௃I1!*,-K(LMN*38᳛ᜧ,-38᳛P.᪷RP=S-$6LMNḄᵯUᵯVWXᵯYZP8᳛Zᜧ;\1ᔠ"ᐵSiS3R1R2]ὶ_ᐭᵯab3ᵯacḄdᵯYᨬP8᳛ᨬᜧᵯᘤᜐ(*.᝱f!"Siஹ1ᔠS3ᵯacgᨵR2ᵯacḄdᵯYiᜧᵯVji8᳛iP*ᘤᜐ(,-.᝱.2!..k=4.2*1!3஻kg[3!,m=10kg,t=68mto=180,20

20ᔾᦈḄBnᔾ=001
ᔆ10!=4.2*1
3஻n1^|3*101^><<680-180=2.1X106Jq@AḄBᐰDEᔾᦈᓽW=Qs=2.1X106J,tP=1000W,*3?q\=2.1XIO,j=2J3XWSP1000Wᦑ
ᫀ,-f2.1X103.w.xyz{⚪nᐳ2P⚪18.
2016•~xyPᵨBPḄᵯ8᳛PḄᵯV2.5V.
1!ᵨᡂ᝞ᵬxᱥᵯaḄ_.n⌕jᵯV⊤BN⌕ᵬ
2ᵯa_1ᔠ"ᐵS,j¡ᵯV⊤ᨵᦪᵯ£⊤ᢣ┐¦§j¨.©ª«¬®Ḅ¯$°±P!anᡈ²³ᡈ´ᜐ_µj¶.
3ᦑ·᣸◀º»xy¼¨½ᱏ¿À³ÁᦪR]ÂA³᝞ÃᡠḄ1-U®.R$6PḄ8᳛0.75W.
4Ä7PŬM10஺ḄÇᵯYÈὶ_ᐭᵯV3VḄᵯULÉb3PḄx▭8᳛±0.2W.ூI
௃I1PḄᵯV2.5VV3.0V,ᵯV⊤⌱ᵨPBNÄᵯV⊤]ὶᙠPḄLÉ᝞Íᡠf
2ᵯacᵯ£ᑣ!aᵯV⊤ᨵᦪᑣÅᵯV⊤]ὶḄÏ᜜Dᑖ¬ÑÒÓÅᵯV⊤]ὶḄᡠᙠÔa!atÕᵯV⊤Èὶᙠᵯac³$°Ḅ¯±P!anᡈP²³ᡈÖᜐ_µj¶f
3ᵫÃ6ᵯV2.5V×ØḄᵯ£0.3A,ᡠ%ᐸ8᳛P=U4=2.5VX0.3A=0.75W4ᵫÃ6gᨵ\ᵯVU=1.0V,×ØḄᵯ£I=0.2A3᪷RÈὶᵯaᵯ£ḄᱯÛÇᵯYḄᵯ£ᜧPÜ(0.2A,b3ÇᵯYḄᵯVU=IR=0.2AX10Q=2V,q᪷RÈὶᵯaᵯVḄᱯÛÇᵯYḄdᵯVU=U+U=1V+2V=3VÝÑᵯUᵯV.ᡠ%b3PḄx▭8᳛P$=UXI=lVX0.2A=0.2W.wᦑ
ᫀ1᝞ÍÞᡠf
2P!anᡈP²³ᡈÖᜐ_µj¶f
30.7540.2.21

21Jt19.n2016•₹åxyæᵯUᵯV6V,⌕BPḄ8᳛Pé⌱ê¬MᵯV2.5V,ᵯYᜧì10CîÍḄPPïA³ᵯanᵬ.n1PéðᑮᵯañA¬Mòóôᓄxyöᣵ½¨iYᘤBPḄᵯ8᳛.øùPéḄxyúᫀ$»ᔩüýþün2ÿᢥ᯿Ḅᵯᨵᨬᜧ10Q60஺Ḅᘤ!"#$%⌱'ᨬᜧ#60)Ḅᘤ.+3-./0Ḅᘤᵯ1⊤+⌱ᵨᔠ〉Ḅ67-8ᐭᵯ.+4-ᙠᘤᩞ⌱'=>ᵯ?8@AḄBCDEᔠFᐵHIJKLᵯ1⊤ᵯM⊤NᨵOᦪᢥ᯿/Ḅᵯ?8ᑨR⌕THIUᐝ!ḄWXY.ᘤḄᱏᔣ\].^᦮ᵯ@`aFbᙠ^⁚ᘤḄd70HIeᯠᰐhᵯM⊤ḄOᦪeᯠi=Oᦪᵯ1⊤ḄOᦪ6V,!ᑨRᦑmnoYHIR.+5-#qrAsHIKtuᵯ1Ḅᐵvwxyz{᪷}ᦪ}~xHIḄU-I+᝞ᡠO-.᪷}HIḄs᳛0.5W.ூ௃Y+1-q⁚ᵯḄᵯ1#2V,HIḄsᵯ1#2.5V,ᣵᘤ=HIḄᵯ1ᑮHIḄsᵯ1ᡠḄ¡ᫀJn£+2-sᵯ1DHIḄ▭᳛s᳛¥¦§¨ὶᵯ0ᔜᜐḄᵯM¥¦ᡠᵯ0ḄᵯMY1,¬=0.25A,RIOOL§¨ὶᵯ0®ᵯ1¦¯ᔜᑖᵯ1±,ᡠᘤḄᵯ1YU²U-UL=6V-2.5V=3.5V,ᘤ8ᐭᵯ0ḄᵯY´µ_3.5VR■=14Q>10Q,I0.25A22

22ᦑ⌱ᨬᜧ60QḄᘤ£3HIḄsᵯ1#2.5V,ᑣᵯ1⊤Ḅ67#03VºuHI{ὶᘤḄ»¼½¡8¾¿uHI¥?᝞DᡠOY4ᵯ1⊤ᵯM⊤NᨵOᦪÀÁᵯºHIÃᨵÄHIJKḄŧ▭᳛ÆDqrḄWXY.ᘤḄᱏᔣ\]£HIeᯠᰐhᵯM⊤ḄOᦪeᯠi=Oᦪᵯ1⊤ḄOᦪ6V,ÀÁᵯ1⊤{ὶÇᑖRᦑmnoHIR£
5ᵫnÉHIḄᵯ1UL=2.5VÊÂdḄᵯMIL=0.2A,ᑣHIḄs᳛PL=ULIL=2.5VX0.2A=0.5W.ᦑᫀ#Y1!Jn£=ËHIḄᵯ1¦¯sᵯ1£
2603᝞½ᡠO£4.ᘤḄᱏᔣ\]£HIR£
50.5.Ì.⚪+ᐳ1⚪-20.
2016•ÐÑ-ᵬ#Ó^ÔᵯÕᧅ/#ᐸØᓄḄᵯ#ÔÚFᐵÔÚFᐵᵫÛÜN¥ÝḄÞᱏßᱏààᙢâᙠqãwᡂḄåæÊᵫ¯ÞᱏçèiéßᱏᜧêëìᱏíᔣßᱏîïðñÔtòóðñiòÁô.êëìᱏõöAu÷ឋùᱏ½ḄõöBÅᩭ¥ÂḄÂᵯaᢣOHLKR#▲Mᵯ-UæýUæëìþýÔtᓣ.ᓣᑮAஹBᑖᵯḄᙠᓣḼḄᱏ⌲"ឮ$%&AஹB'()*ᵯ+,*-Ḅ'.ᓣ/012345Ḅ6Ḅ.
17ᵯ8ᧅḄ5ᐵ;<=>?ᱥᳮBCᑴᡂḄF
2GHᱥ◤⌕GḄ8KL◤⌕MḄ8KN᝞PQ⁚QSTF
3LᢣVWLXᵨ"3V0.03W”ḄZW[\?▲^ᵯ_R`ᜧbcdZW[efghF23

23(4)mnḄop᳛r1000W,ᑣmnḄᵯ_`ᜧFL⌕dḄᵫ2(®ᓣᑮ220{|}◤⌕`~F(Ḅr1kg,nr0.4X1(PJ/(kg.®),nᜫ)ூ௃(1)ᵫ⚪BᱏᱏnGᱏmᑮ5ᐵ5ᑴᵯḄ6ḄᑭᵨḄ;n¡ḄᱥᳮBCᑴᡂḄ¢(2)◤⌕M8K⌕Q⁚QSTdᓣ£¤¥¦§¨4©ឋ«ᱏ¥¦dᱏ¬ᔣ¥®dᱏᔣ¥¯⌕ᜧ°±⌕²°±¢(3)W[efmᐝḄᵯµUL=3V,º»ὶᵯ½ᔜᜐḄᵯ^ÀÁᡠÃᵫP=UIÅZW[ÆḄᵯ^I=^=0-03W=0.01A,U3VLº»ὶᵯ½ÉᵯµÁÊᔜᑖᵯµËᡠÃ▲^ᵯ_ÌÍḄᵯµUR=U-UL=220V-3V=217V,ᵫI=UÅ▲^ᵯ_RḄ_ÑR_UR_217V4D.=2.17X10Q¢R123(4)ᵫP=Ó°ÅmnḄᵯ_:RR_U2_(220V)2lx.J'l_J--------------=48.4஺Pn1000WᔾᦈḄnQÙ=cm(t-to)=0.4X103J/(kgᖛ)XlkgX(2200-200)=8X104J,nᜫᵫà=(3ᔾ=áÅ◤⌕Ḅân(1)7ᵯ8ᧅḄ5ᐵ;<=n¡ḄᱥᳮBCᑴᡂḄ¢(2)◤⌕M8K⌕Q⁚QSTdᓣ£¤¥¦§¨4©ឋᱏ¥¦¢(3)LᢣVWLXᵨ"3V0.03W"ḄZW[\?▲^ᵯ_RḄ_Ñr2.17X1()4QbcdZW[efgh¢(4)mnḄᵯ_r48.4Q,L⌕dḄᵫ20{ᓣᑮ220ä|}◤⌕80s.æ.⚪(ᐳ6Z⚪)21.(2015•êᓭ)Zì᱆᱆ᙠᖪï⌱½°ñònóᵯnôᘤöḄghᵯ÷øù᝞÷ᡠV(÷½R;ânᵯ_ᐸᵯ_0ûᓄ)ᑣ24

24ᵯ
ᘤýþDSI—*1Bÿᵯ/220T⚣᳛501lz᳛4000«■IPVᵨᡝk^tt^iSfJXJOmirr.KTK%஺ᵯᡈ⊤18ᱣ""I☠ᡃ1ᵯᘤ!"#ᵯ$%ᵯ&'(ᜧ*+,-.ᶇ012ᦪ4
2ᵯᘤ!"15min,5ᵯ6R7ὑḄᵯ:'(;kWh?3᪷=⚪%ᵯ$?@AB0C5ᵯ6RoDECFᐵSiஹ$2,IBJKᵯᘤLMᵯ$ᦋO.QR⌕TUVW⁚ᵯᘤḄY᳛UVZᜩY᳛'2000W,᧡ஹ]EWY᳛'4000W,^WY᳛'6000W,I_`ᦋOaḄᵯ$?bRcRo.4deᐰᵨᵯὃ⇋᝞-KᵯᘤjkeOᑮmnᵯ$%o:p⌼ᡂsta-uvw*+ᑏ`0y4ூ{|௃{1!ᵫP=UIoᵯᘤ!"#ᵯ$Ḅᵯ&P4000W^I==182AU220V
2P=4000W=4kW,t=15min=0.25h,ᑣ!"15min5ᵯ6R7ὑḄᵯ:W=Pt=4kWX0.25h—lkW«h
3ᵫ⚪oE5ᵯ6bὶᑖᵨ0CFᐵᑴᵯ$᝞?ᡠZWᔠFᐵSஹS2#,FSi#ᵯ$¡RoḄ¢ᓫᵯ$᳛Po=2OOOW,ᵫP=
:U2_(22OV)2R,24.2QP2000Wo
4᝞-KᵯᘤjkeOᑮmnᵯ$%ᵫ«¬᳛ᜧ᪷=I=Eoᵯ$¬ᵯ&u®ᜧᑣo:p⌼ᡂa-ᨵজᵯ$¬ᵯ&®ᜧঝ²³ᵯ$ঞ.◅¶ᰚট¹ºFᐵ»¼ঠᵯ:⊤!"Uᡈ²³ᵯ:⊤.|1ᵯᘤ!"#ᵯ$%ᵯ&'18.2A
2ᵯᘤ!"15min,5ᵯ6R7ὑḄᵯ:'lkWh
3Ro=24.2Q25

25+44deᐰᵨᵯὃ⇋᝞-KᵯᘤjkeOᑮmnᵯ$%o:p⌼ᡂa-ᨵজᵯ$¬ᵯ&®ᜧঝ²³ᵯ$ঞ.◅¶ᰚট¹ºFᐵ»¼ঠᵯ:⊤!"Uᡈ²³ᵯ:⊤.22.+2015•À4ÁᨵECᵯ6ᐗÃᐸ%0C'ᵫÅÆᩞᧇᑴᡂḄÉḄᵯ6ÊËÌḄᓣÎÏÐᜧÑ0C'ᵫÒÓÔᩞᧇᑴᡂḄᐸᵯ6ÊËÌḄᓣÎÏÕ2.ÁJᐸ%0Cᵯ6ᐗÃRoLMÖ×Öᐸᵯ&Ø5ᙠÉEÚḄᵯÛÜÖ×ᦪ=᝞⊤á0ÝáÝáâÝáãÝáäÝáåÝáæÝáçÝÝᦪᱥᳮàU/V0.400.600.801.001.201.401.601.80I/A0.200.450.801.251.802.453.204.05+14I᪷=⊤%ᦪ=ᑨᐗÃRoo:'ᵫëìíîᩞᧇᑴᡂḄ*bïðᳮᵫ.+24ñÜᵯ6RDᐗÃRokᐭ᝞?ᡠḄᵯ$%ᔠFᐵaᵯ&⊤óᦪ¡1.8A.ôᵯ$%ᵯᵯÛឤ¡3V,ö#Üᵯ6RḄᵯ᳛¡(ᜧ*+34ᑖ᪆⊤%ᦪ=ᑏ`ø®ᐗÃRoḄᵯ&IDᐗÃRoEÚḄᵯÛUùúḄᐵûü.RoR—ᔠ-Hi~~-Iூ{|௃{+14ᑭᵨþüR=UᑖRcUVᵯÛḄᵯ6Üᓽ2஺ஹ1.33CஹICஹ0.8QஹI0.670,0.53Qஹ0.5Q,ᵯḄḼḄᓣᦑ!"#$ᩞᧇ.'2(ᵫ⊤+ᦪ-./ᵯ0!1.8A2Ro56ᵯ7Uo=L2V,ᑣR56ᵯ7U=U.-Uo=3V-1.2V=1.8V,6RḄᵯ>᳛P=UI=1.8VX1.8A=3.24WD'3(ᑖ᪆⊤+ᦪ-.G0HᵯᐗJRoḄᵯ0IKL56ᵯ7UḄMNᡂPQRST1=02,US0.20A,U=0.40VVᐭXGk=1.25DᑣZHᐗJRoḄᵯ0I[L56ᵯ7UḄᐵ]^_GI=1.25U2D`G'1("#$ᩞᧇDa!/ᵯ0bᜧ2de>᳛fᵯD'2(g2hᵯRḄᵯ>᳛!3.24WD'3(ZHᵯᐗJRoḄᵯ0I[L56ᵯ7UḄᐵ]^_G1=1.251(2.23.'2015•jk('1(“36V25W”ḄnoPpdᐝ2Ḅᵯ_frs'2(tuvᵫwxyX"36V25W"noḄᵯ0[ᵯ7ᐵ]{|᝞~ᵬᡠ`GজUgnoὶᐭ220Vᵯ+ᵨᑣr⌕ὶfrsঝ/11᪵Ḅnoὶᐭ220VḄᵯ2ᔠ~|noḄw▭>᳛_frs'3(ᨵno¡¢£¤Ḅ¥hᵯ7!36V,Uᐸᐭ᝞~§ᡠᵯ+./¨ᔠ©ᐵS,«¬ᘤ«ᱏ°±+²C2noPpdᐝg2noḄᵯ>᳛!P,/«ᱏ°±ᨬ´6b2now▭ᵯ>᳛!P¶.PGP-=16G9,¸ᡠᵯ¹ᵯ7U!frºs'noᵯ»¼R(26

261(A)~§222ூ¾`௃¾G(1)ᵫP=ÁXGR=JL=I36V).=518QRP25W2
জUgnoὶᐭ220Vᵯ+ᵨᑣ⌕ὶnᔁ9=6.1,ᦑÃὶ7Ä᪵ḄnoDঝ/11᪵Ḅnoὶᐭ220VḄᵯ2noᑖXḄᵯ7!20V,ᵫ{|~.20VÅÃḄᵯ0!0.6A,ᡠÆnoḄw▭>᳛!Pw▭=UwI=20VX0.6A=12WDs3
TnḄᵯ!Ro,«¬ᘤᵯ!R,ᑣ/«ᱏ°±+²C2noPpdᐝ>᳛!P=জ/«ᱏ°±ᨬ´6b2no>᳛!P='ߟ^ߟ(2.RoঝR0+Rᵫ±PGP'=16G9'3
ᵫƤÊ^ὶ˾XGRo=R/«ᱏ°±+²C2noPpdᐝno56ᵯ7!36V,g2«¬ᘤ56ᵯ7!ᛛ2=18VÍa!ὶᑣᵯ¹ᵯ7!U=36V+18V=54V.`G'1
noPpdᐝ2Ḅᵯ!51.8QD'2
জUgnoὶᐭ220Vᵯ+ᵨᑣr⌕ὶ7Dঝ/11᪵Ḅnoὶᐭ220VḄᵯ2noḄw▭>᳛_12WD3
ᵯ¹ᵯ7!54V.24.2015•Î(Î✏ÐÑ├ÓÔᔜᙢ×ØÙ✏Ð◤⌕ÛÜᕣÞ.᝞~!"ßà"£✏ÐØÙᛛᧇáᑁḄᵯ~noL¤᪗ᨵ“220V,100W”.ᜩ+åæ[çᜩὑᵯéêÆëᵯìíêî⊤'Rὃ⇋Ri,R2Ḅᓄ(ôåKiஹÜஹ¤ᙳ¨ᔠ102ὑᵯ11çᜩK2¨ᔠKiஹK3ᙳö142ὑᵯ5.6©¸GপR2Ḅ;'2
RiḄ.27

27ூ¾`௃¾G(1)᪷-.noåùὑḄᵯGtW=PLti=O.lkWX10h=lkW*h
LᐵᔠLR2ὶᵯR2ὑḄᵯW=W^=WL=llkWRiR2?ὶᵯ@ABᜩDEF᝱„2I?ὶᵯ@JKᵯLMᔜᑖᵯPQ᪷)Q=l2Rt=4t/0KᵯḄ1:R2DU2tUt2(220V)2xi4X3600s……QW5.6X3.6X10bJSIR=48.4Q,2ᑣRi=R-R=121Q-48.40=72.60.2U(1)R2Ḅ1A48.4Q(2)RiḄ1A72.6Q.25.(2011•ᓭY)▅[\ᦻ^U_⚪A⁚bc.defghᙠᐵjklmYnoejᵯlpqrskḄtᑖkuᓄAᵯwxᙠyᵯzJ.⊤Jᡠ}~efghḄtᑖᢈᦪᐸJwᦔ᳛~ᢣghᐵjklghḄnJYnjᵯlpkuᓄAᵯḄᦔ᳛.ὑ~ᢣgh100kmὑḄ.JᐜghᯠmᐵjklᑖQᐵjᵯl¡¢£ghYnḄ@s¤¥Ḅr¦ᜧov,©ªkEk,EEk-s¬᝞¬ᡠ}.XXeghK¯(kg)wᦔ᳛(±)6஺ὑᚗ0(L/lOOkm)28

28¶1·jᵯl~᪷)ᵯ¸¹¥ºᳮjᵯḄ.jᵯnJk◀½uᓄAᵯ᜜ᵫMÀᙌᨵᵯÃᨵtᑖuᓄAᑁ.¶2·gh100km,ὑḄ¯A7kg,ÅᐰÇÈÉÊËḄÌAÍ322X1¶·8j¶ḄϦp=o.7X103kg/m3,Ì1q=4.6X107J/kg·.¶3·ghᙠᜧoA800NḄᱫÕÖEᵨ£Ø25m/sḄr¦1000m.ÙnJghB.A.ÜᑮḄÖAL2X104JB.ḄÞA40sC.ᱫÕÖàḄáA3.2X108jD.ᱫÕÖḄá᳛A80kW¶4·ᵫ¬/ã⊤}jᵯläḄ¬À~ফ¶æ"জ"ᡈ"ঝ"·ᑨ>Ḅì)~í¬J/ØîghàᒴrÀskr¦ðñkðñòᐵjklm,r¦qokqoókr¦Ḅôõᡂ÷IÙk@Ḅ¬¥~ঝ.¶5·øghḄkEko=3.75X105J,dùᐵjklújᵯlûDEᨬýᨵ1.5X105jḄkuᓄAᑁ.ூÿ௃1ᵯᔠᵯḄᑖᙠᑗᒘ!"#$ᵯ%.'ᵯ(!)ᑭᵨ,-ᳮᩭ01Ḅ.ᙠ'ᵯ234◀67ᓄ9ᵯ4᜜ᵫ<ᙌᨵᵯ?ᵯ%@2ᙌ⌕#$BCDᨵᑖ4C7ᓄ9ᑁ4.2VV=10L=10dm3=0.01m3,p=0.7X103kg/m3,VὑXYḄZC9m=pV=0.7X103kg/m3X0.01m3=7kg,[q=4.6X107J/kg,XY`ᐰXb#$ḄBC9Q/=mq=7kgX4.6X107J/kg=3.22X108J.A3fgᙠᜧi9800NḄᱫlm1ᵨno25m/sḄrstuvw1000m.x.Aஹfgᒴrvwᙠ{|}ᔣᑮḄᱫlm?m)|⊝mᱫlm9800N,?m9800N.┯ᔠ⚪.BஹvwḄ9t0=l00°in40s.tᔠ⚪.=V25m/sCஹᱫlmḄ9W=Fs=800NX1000m=8X105J.┯ᔠ⚪.5DஹᱫlmḄ᳛9P=^-=8X1QJ..-2X104W.┯ᔠ⚪.t40sᦑ⌱B.4¡o¢£fgᒴr¤rs¥4¥¦§6'ᵯ(¨,ᨵᑖ(©47ᓄ9ᵯ44ª«Ḅrs¬ᡠo¯⚪⌱ঝ.5•.•²4ᦔ᳛60%,47ᓄ9ᑁ4Ḅᦔ᳛9r=l-60%=40%,29

29[Ek0=3.75X105J,,W=Ekon=3.75X105JX40%=1.5X105J.rtᦑᫀ9(1)ᵯᑁ.(2)7,3.22X108.(3)B.(4)(2),¡o¢£fgᒴr¤rs¥4¥¦§6'ᵯ(¨ᨵᑖ(©47ᓄ9ᵯ44ª«Ḅrs¬ᡠo¯⚪⌱ঝ.(5)1.5XI05.26.(2009•ᓭÀ)▅ÂÃᦻÅÆ⚪.fg■ÈÉfgᙠvw'(ḄÊs"ᓣÌÍÎ.96ÏÐᐰ¡ᵨ{ÑÒÓvÔᓾ.Ö▭,{ØØD⌕¬ᐭ᧕ᢵ'Ḅ■ÈÉ(-É)¬ᐭ■ÈɨḄÜᔠÉÝᜩß᧕àáâ¦gß᧕ãä.ᨵᐵæᧇ⊤é■ÈÉ{ᢥëḄìíÜᔠÜᔠÉḄàáîஹãîëᐹᦪñòón⊤(⊤■ÈÉôC)ᢣ■ÈÉᙠÜᔠÉᡠᓰ÷Ḅøᑖì).■!(')30405060708090ᔠḄ/01(2)-17-28-37-49-48-46-28ᔠḄ51(6)103104107111117124141ᙠùfg{ú¬■ÈÉûüÜᔠÉḄàáîì¯ᙢuþᨬ
10~150.ὃ⇋ᑮᔠḄᦣᦔᔠ■Ḅ!"#$%.1020X)405060708090ᱯ56717%(1)789:;ᵨ=ᩭ?ᓾABC=ḄEᜧ.(2)ᙠᔠ᝞■!ᵫ30%⌲LMᜧᑮ90%,ᑣᔠ/01ḄPᓄRSBD.A.⌲Lᓣ%B.⌲LXC.ᐜᓣ%[XD.ᐜX[ᓣ%(3)\]ᙢ_`ᨬ
C-156bcᙢd78ᩭeᙠfᑡ"h■!Ḅᔠ#⌱B.A.30%B.40%C.60%D.90%(4)jᙠk2lmᔠ51n■!Ḅᐵpkqrᵫkqstuv■Ḅ!wᑮ75%xᔠḄ51ᜧyB.1202.30

305
zx{|ᵨ[78=}Ḅᔠ~.nᩭᔠḄ51ᓣ%⌱"ᓣ%"ஹ"X"ᡈ""P"ᐸB=ᵫ7ᓄ~■Ḅ!Mᜧ.ூ௃1!C=ḄEᜧh!Ḅ=ᐸᱥEᓣ%hḄ,=ᔾᦈḄ!ᡠt789:;ᵨ=ᩭ?ᓾr2
⊤ᦪm■!ᵫ30%⌲LMᜧᑮ90%xᔠ/01ᐜX[ᓣ%ᦑ⌱D3
]ᙢ_`ᨬ
C-152ᵫᔠḄ/01ᙢ_`ᨬ
10152,ᑣᔠḄ/01yC-30-250,ᵫ⊤ᦪsv⌱¡40%90%Ḅ■ᔠ■Ḅ!"#$%ᡠt⌱¡40%Ḅ■ECᔠ〉ᦑ⌱B4
ᔠ51n■!Ḅᐵpkq᝞kᡠ£ᵫkqst¤m■Ḅ!wᑮ75%xᔠḄ51C12005
nᩭ=}ᑁḄ=ᵫ7ᓄ~■Ḅ!Mᜧ|ᔠḄ51ᓣ%.ᦑᫀC1
r2
D3
B4
1205
ᓣ%=ᵫ7ᓄ~■Ḅ!Mᜧ.toni11§,,~---"¨t/«z©ᨴ«¬᪥2018f¯°±²▲x´µ¶·ᔁ¹`ºᱥᳮ§ஹᓫ⌱⚪¾⚪3ᑖᐳ36ᑖ31

311.᝞kᡠ£ÁÂÃ⊤☢Å᦮ஹÇÈḄÉÊËÌ[ÍÎÏᑮ§Ðᓽ|ᙠf☢Ò§ÃEÓḄᱥÔÕ"Ö×ØAÃÙÚ⊤Û#0AᑖÜ{ÝᙠÞßBᑖÜ{ÝᙠàßCᑖÜᙠá"âãᙢä:D:ᑖÜ{ᨵæ◣ᫀA᪆:⚪ὃêᑖÜ{lᵨß஺ÉÊËÌ[Ïᙠ§ÐeÛᑖÜ{ÝᙠÞßA⚗íᔠ⚪î஺ïðᡠñ⚪òóᫀCA஺2.ᔊõðᨬᐜöóᙢó÷øᵯúûüḄ!ýᵯúஹᵯþÿᵯ
ḄᐵḄᱥᳮ஺ABᱯCᝍᱯD:ᯖὡᫀ:D᪆:⚪ὃᱥᳮ!஺32

32A,$%&'ᑣ)ᵨ+ᑨ-.ᵯ/01Ḅ2᩽)ᦑA56ᔠ⚪8஺B,ᱯᙠ1800>?@ᱯᵯᚮ)?@&ᵯB)ᦑB56ᔠ⚪8஺C,ᝍᱯ?D&ᵯEḄ2ᦔG)ᦑC56ᔠ⚪8஺D,ᙠIJḄKẠM)NOᱥᳮᯖὡPQ&ᵯERSḄTUVᵯEஹᵯXஹ.ᵯ
Ḅᐵ)ᓽ?D&ᯖὡ'Z)ᦑD6ᔠ⚪8஺ᦑ⚪ᫀ[D஺3.^_`abTcḄdefg[1S))r/nnn)l1snᡂ&A.30_ab)p&30qrB.60_ab)p&60qrC.120_ab)p&30qrD.60_ab)p&15qrᫀ:Dv`abTcḄdefg[18°°x/"ᔊ{)ᑣ|de}~f30ᙌ.[^_def2ᙌ)nᡂ`_ab)pr1q,ᡠdef30ᙌᐳnᡂ60_ab)pr15q.ᵫM⍝⌱⚗AஹBஹC5.ᡠD⌱⚗Ḅ.᪆:⚪⌕ὃ_☢Ḅ!1cḄ^_ᵫᔾabஹabஹprabஹ᣸ab`_abᡂ.ᙠ^_¡¢£f2ᙌ)def2ᕜ)pr33

33^q.(2)1800r/ni/nḄ¥¦vl⊤¨TcḄde}ᑖf1800ᙌ.4.⏀«¬®¯¬°±ᕒᔲ⏀´°µ)lḄ¶ᳮ·᝞·ᡠ¨஺·¡¹['ºᵯX)⏀«»¼½ᘤ¿ḄᵯXÀ⏀«»ÁÂḄÃᜧÅÆÇ஺᝞È°±ᕒÉQḄ⏀«»ÁÂÊᜧ)Ë̬®Ḅ()஺ߟ—II------——AvᵯE⊤¨ᦪ5ÑBvᵯE⊤¨ᦪÑᜧCv¼½ᘤÒÓḄᵯÑᜧD:'ºᵯXQÓḄᵯ5ÑᫀvB᪆:⚪ὃᵯÔḄÕ᝱ᑖ᪆×ØÙ'ZḄGᵨVÚÛ஺AஹB⌱⚗)ᵫᵯÔ·)'ºᵯXV¼½ᘤḄᵯXÜὶ)ᵯE⊤¬UᵯÔ¡ḄᵯE஺᝞È°±ᕒÉQḄ⏀«»ÁÂÊᜧ)ᑣ⏀«»¼½ᘤÞḄᵯXÊÇ)ᵯÔḄßᵯXÑÇ஺᪷á/)ᵯÔ¡ᵯEÑᜧ)ᓽᵯE⊤Ḅ¨ᦪÑᜧ)ᦑA┯ã)B஺cஹD⌱⚗)[ÜὶᵯÔᵯEÃᜧ)'ºᵯXaÓᵯÃᜧ)ᦑ&ÓḄᵯÑÇ)ᦑCஹDᙳ┯ã஺ᦑ⚪ᫀ[B஺34

345.æḄçTèç᯼Ḅᜧ)ê
ëTìU×íîïêḄ᯼×æḄ1ðñïê)ò1ᑁô»ᓣîᑮ40஺஺÷_øb¡A.᯼îÂᐜᓣᑮ40࠷B.ê^
úæḄîÂç᯼ûC.ëTïê
)æᔾᦈḄTUýD.ᓣûïêḄîÂ)᯼◤ëTÿḄA.Ḅ᯼ḄᜧḄ᯼᯼ᔾᦈḄ◤⌕Ḅ᯼ᐜᓣᑮ40ᦑA!B.ᵨ#$⏀&'()*Ḅ+,ᑣᙠḄᑁ᯼ᔾᦈḄ0Ḅ᯼Ḅᜧ᯼ḄᓣḄ1234ᦑB┯!C.ᵨ#$⏀&'()*Ḅ+,ᑣᙠḄᑁ᯼ᔾᦈḄᦑC┯!D.Ḅ᯼ḄᜧḄ᯼ᓣḄ12ᔾᦈḄ6◤⌕ḄᦑD┯.ᦑ⌱Aᦑ9ᫀ;a<⚪ὃ?@ABḄᜧḄᳮ,ᨬFGHIJQ=cmAtᳮḄKᱥᓣḄ12ᜧḄᔾᦈ6!ᔾᦈḄᜧḄ12Mᓄ4.35

35᪆:ᑭᵨSᑡUVᑖ᪆ᑨY1ᵨ#$⏀&'()*Ḅ+,ᑣᙠḄᑁ᯼ᔾᦈḄ!2Ḅ᯼Ḅᜧᵫ஺=6119]U^_ὅḄᙠᔾᦈᓣḄ1234!ᙠᓣ12ᔾᦈḄ6.6.abcᨵ(⍝fgᨵh(⍝fiᐵklᐵk#⍝fhmnᔠ#$pᐵq3rcᑁḄᢣt'uvwᐝ⊤zfiᐵk{஺|}~ᔠ⌕Ḅᵯlq஺9ᫀA᪆:<⚪ὃ?ὶὶᵯ஺A⌱⚗gᨵ($pᐵinᔠᢣt'uvwᐝᦑA஺B⌱⚗($pᐵinᔠᢣt'KvwᐝᦑB┯஺C⌱⚗g⌕#$pᐵnᔠᢣt'vwᐝᦑC┯஺D⌱⚗h($pᐵinᔠᢣt'KvwᐝᦑD┯஺ᦑ<⚪9ᫀ;Ao7.᪗Ḽ''஻Ḅᵬ'''஻Ḅ'ὶᙠᵯ36VḄᵯ},!#lqoA;ᵬ'᳛ᜧᡠᵬ'B;¡¢£Ḅᵯ¤¥ᡠ#᪵C;ᵬ'Ḅᵯ§4ᡠᵬ'36

36D;'©▭᳛ᜧᡠ'9ᫀ:D᪆:<⚪ὃ?ᵯ᳛Ḅ«¬஺ᵯ'Ḅ2ᐸ©▭᳛ᨵᐵ᪷°ᵯ᳛«¬IJḄM±]²ᵬ'Ḅᵯ§;—L'Ḅᵯ§;!ᵫm('ὶᙠᵯ}µ¡ᵬஹ('Ḅᵯ¤¥஺·᪷°ᵯ᳛«¬IJP=஻R]Uᵯ¤#ᵯ§ᜧḄ'º»ὑḄᵯ᳛ᜧᡠ᜜'Ḅ©▭᳛ᜧ¾'!ᦑD஺ᦑ<⚪9ᫀ;D஺᡽Àᵯ᳛4Ḅᵯ§3ᜧ!ÁÂ᳛ᜧḄ,ᵯ§34஺B_ᵨPi_A_Äᙠὶᵯ}P.#5#Æ!ὶᵯ}Pt~I->~Rto᝞|ᡠtḄᵯ}ᵯÈᵯaᢝKMnᔠpᐵS,ᵯËÌÍ.¡{#vÎ(ᵯ⊤ḄtᦪiÐᯠMᜧᑣÒᵯ}ÆÓḄᦑÔ]ÕlqA.'LwA{Y37

37B.'LwA{C.ᵯ§RÆÓYD.ᵯ§RÆÓ9ᫀ:B:Aஹ᝞×'LwA{Yᵯ¤⊤tᦪM;Ø.¾⌱⚗K~ᔠ⚪Ù!Bஹ᝞×'LwA{ᵯ¤⊤tᦪMᜧᵯ⊤hmÚᵯÈᵯᦑtᦪÛMᜧ.ᦑ.Cஹ᝞×RÆÓYᵯ¤⊤tᦪM;Ø.¾⌱⚗K~ᔠ⚪Ù!Dஹ᝞×RÆÓᵯ⊤tᦪ;0,ᦑ¾⌱⚗K~ᔠ⚪Ù!ᡠB⌱⚗Ḅ.᪆:ᑨYᵯᦑÔÜ⚪}ὃ⚪}ËÝḄ⚪ÞᙠKÕßàᦑÔá]âᵨᦪ@kḄ''Áãä஻å⌱⚗⌲#çᐭ⚪é,ê?ᔲ~ᔠ⚪Ù.9.᝞|ᡠtᵯ}ᵯ⊤ViஹV2ஹV3Ḅtᦪᑖì;5ஹ5ஹU,3ᵯ¤⊤AlஹA2Ḅtᦪᑖì;Ì1ஹÌ2,íîSᑡᐵïJḄlq-T1A.U=U1+U,I1=I232B.U=U1=U,I1=I23238

38C.U1+U=U,Iil2239ᫀAᵯ}(ᵯ§ὶVlஹV3ᑖìÚ($ᵯ§(ðḄᵯV2ÚᵯḄñᵯᦑᨵU2=U1+U3,11=12010.᝞|ᡠtòóôᘤḄáᳮ|ᐸ}ö÷kðøùM§ᘤḄøᱏPûᙠ#ü,ABᨵ]ᦈýḄþÿ

ᵯ.ᔠᐵS,Fᜧᵯ⊤ᵯ⊤ᦪᓄA.ᵯ⊤ஹᵯ⊤ᦪB.ᵯ⊤ஹᵯ⊤ᦪᜧC.ᵯ⊤ᦪᵯ⊤ᦪᜧD.ᵯ⊤ᦪᜧᵯ⊤ᦪ!ᫀ:B$%&'ᘤ)ᵯ*ὶᙠᵯ-.Fᜧ,&'ᘤ0ᐭᵯ-Ḅᵯᜧ,᪷456789:⍝<=ᵯ-Ḅᵯ39

39ᵯ⊤>ᵯ-ᵯᦑᦪ.771
ᵯ,ᡠ9ᐸDEḄᵯ*ὶᵯ-FᵯGHᔜᑖᵯK)ᡠ9&'ᘤDEᵯᜧᵯ⊤>ᐸᵯᦑᦪᜧ.ᑣA,C,D┯NBOP.ᡠ9B⌱⚗OPḄ.$᪆%✌ᐜᑖ᪆ᵯ-ḄV0WX,ᯠZᑨ\ᵯ⊤)ᵯ⊤>]^ᵯ-ᐗ`Ḅᵯ)ᵯ,abc᪷4567ᑨ\ᵯ)ᵯḄᓄ.᝞eᡠᵯfᵯgᢝiজ%k=12.mᔠSᵯ⊤Ḅᦪ
03n,opὑḄr᳛
tumᔠ$2
pὑḄr᳛
°8w,pὑḄr᳛
2,xn/2=9:8.ᑣyᑡ{|OPḄA.ᵯfᵯ
12yB.3Ḅ
᝞°C.}Ḅ
200D.&ᐜZDpὑḄr᳛K
%2!ᫀ:A$%mᔠ8
pὑḄr᳛
^’k,mᔠ8p40

40ὑḄr᳛
p2=ᔉPi_liRi_(0.3ভ2_g
2X,ᡠ9mᔠ8ᵯ-ᵯ2=0.2A,===20஺ᡠ9"Ḅ
“(°21)bᦑB┯Nmᔠ“ᵯ-ᵯᵨ+",(1)mᔠ$2ᵯ-ᵯL=UU2+Ri27?I+Ru(2)(1)(2)ὶ¡¢ᐭᦪ48£%0,3+6=0.47?|+4,Ri=20(2abc£}ᵯ=40஺ᵯfᵯU=1211ᡠ9©⌱⚗OPḄc┯N«bpὑḄᵯr᳛Pr=I¯”"=(0.3.4)2X20S>=1±²ᡠ9ᐜPR_1.8W_9ZDpὑḄr᳛K
µb¶·b¸ᦑD┯N.ᡠ9A⌱⚗OPḄ.$᪆%mᔠ8kº*ὶᵯ⊤>»Fᵯ,ᵯ-ᵯ%+½mᔠ᧎}¿*ὶᵯ⊤>»FᵯÀ:%pὑḄr᳛Á=Â/,À:Ä%᧎=9:8)%&=1%2,ᑡ}ÅÆḄGXÇ}mᔠᵯ-ḄᵯÈᑭᵨXRÇ}ᡡḄ41

41ÈᑭᵨX/=ËᑖÌÇ}FḄabcÇ}ᵯfᵯ)k«bpὑḄᵯr᳛.ÎÏÐᙠÑ''Ó⁚ÕÖ×Ø஻ḄᵯÐÚÛᵯ-᝞eᡠ.ᵯfᵯឤ
¸5஺ᵯ⊤»Ý'ஹ&'ᘤÞßஹஹ20QIA”,ÕÖL᪗ᨵஹஹ2.5VL25I²஻â᪵äᶍÕæᵯᓄ.ᙠiçèᵯ-ᐗ`Ḅyyᑡᑨ\OPḄA.ᵯ-.ᵯᓄḄê0¯054B.&'ᘤᓄḄê2.5஺~10஺C.ÕÖḄᨬr᳛0.162WD.íᵯ-.ᨬᜧr᳛2.25W
E.íᵯ-.ᨬr᳛1.35W!ᫀ:D$%ᵫᵯ-e89:⍝,ÕÖ&'ᘤ*ὶᵯ⊤>&'ᘤDEḄᵯ.42

42(1)ÕÖOïðᐝḄᵯ
2M',r᳛
125H,᪷4*ὶᵯ-FᵯGHᔜᑖᵯK)8£%òᵯ⊤ḄᦪfJn=U-U=4.5V-2.5V=2VL
21'<311óᨵô}ᵯ⊤Ḅ»Ýᡠ9ÕÖOïðᐝu(2)᪷4õ=U18£,ÕÖOïðᐝᵯ-.Ḅᵯ:PLL25W²bTö=÷=ᨵh=°Wᨴᵫ*ὶᵯ-.ᔜᜐḄᵯÅG89:⍝%=ú&'ᘤᐕü<=Ḅᨬᜧᵯ
1A,ᡠ9ᵯ-.Ḅᨬᜧᵯò&'ᘤ0ᐭᵯ-Ḅᵯᨬᵫ'=2£ᨬᵯ
:ý2VMm==D=40ᵯ⊤Ḅᦪ
3Vᵯ-.Ḅᵯᨬ&'ᘤ0ᐭᵯ-.Ḅᵯᨬᜧ,ÕÖḄᵯ:RULþ=5஺RL=h0.5ᨴÕÖDEḄᵯ:U'=U-U&“ÿ=4.5V-3V=1.5VLᵯ
Ḅᨬᵯ:1.5Vc…Ri.43

43ᵯ
ᵯᓄḄ034~°;ᦑA┯;ᘤᐭᵯ
Ḅᨬᜧ“"3-3ᡠ#ᘤᓄḄ9~1°9ᦑB┯;$%Ḅᨬ&᳛PLUHit=ULImin=1.5Vx0.3/1=0>45Hᦑ┯.ᵯ
Ḅᨬ&᳛)min=UI,=4.5VxO.3A=L35H,ᡠ#D⌱⚗-.Ḅ.ninᡠ#D⌱⚗-.Ḅ./᪆ᵫᵯ
23#4⍝,$%6ᘤ7ὶᵯ9⊤;ᘤ<=Ḅᵯ9.(1)$%->?ᐝAḄᵯ9BCDᵯ9EF᪷H7ὶᵯ
Ḅᵯ9ᱯJKLᵯ9⊤ḄMᦪᓽ3ᑨQ$%<=Ḅᨬᜧᵯ9R(2)᪷H7ὶᵯ
ḄᵯᱯJ3#4⍝ᵯ
ḄᨬᜧᵯS$%ḄCDᵯBᘤᐕUVWᨬᜧᵯXḄYZ᪷H7ὶᵯ
ḄᵯᱯJB[\D]KLᘤᐭᵯ
Ḅᨬ;^ᵯ9⊤ḄMᦪS3VAᵯ
Ḅᵯᨬᘤᐭᵯ
Ḅᵯᨬᜧ,ᑭᵨ[\D]KL$%Ḅᵯ,ᑭᵨ7ὶᵯ
Ḅᵯ9ᱯJKL$%<=Ḅᵯ9ᑭᵨ[\D]KLᵯ
ḄᵯaYbKLᵯ
ᵯᓄḄᨬc᪷H[\D]KLᘤ44

44ᐭᵯ
Ḅᨬᜧᓽ3dLᘤᓄḄ᪷Hp=ᔆ/KL$%Ḅᨬ&᳛Bᵯ
ᨬ&᳛.g.hi⚪kli2ᑖᐳ24ᑖo13.pq3#rst3#uᙠpwJs,xὅᵨḄz{|pqs}cὅᵨḄz{|~s}.ᫀ:&⌴/pq3#rs᥅r&,|pqḄᑁஹᓣᑮpqḄḼpJs}&ᩭᦋᱥḄᑁ.uᙠpwJspqpᔾᦈ,|pqḄᑁஹᓣᑮpqḄḼpJs}VW⌴ᩭᦋᱥᑁḄR¡⚪-.ᫀ:&R⌴./᪆ᦋᑁḄz¢ᨵ&B⌴.ᐸ&ᦋᱥᑁḄ¥¦Ḅ§ᓄ⌴ᦋᱥᑁḄz¢Ḅ§¨.~©ᙠᦋᱥḄᑁwFᦔḄ.14.ᨵAஹB

45C«-ᵯᡠ#B6C«¹ºᵯ₹Eᔾ±.¡⚪-.ᫀ¶Rᔾ±./᪆¼ºᵯ₹E᣸¯¹ºᵯ₹Eᔾ±ᑣᵫᵯ₹ÀḄEÁᵨ3#4⍝3#4⍝AḄᵯឋÄB6CÀḄEÁᵨ.15.Çᑭᵨᵯ⊤;ÈÉᵨᵯᘤḄᵯ&᳛ᵯ⊤ḄÊ☢w᪗ᨵ3000r/KwhḄÒ᪵.^ᵯ
ÔᨵÕZᵨᵯᘤÖÁA;dᙠ15minᑁᵯ⊤Ḅ§Ê§Ú300§ÕZᵨᵯᘤ15minÛὑÚkwhᵯᵯ&᳛SWo▬⚪Çᑭᵨᵯ⊤;ÈÉᵨᵯᘤḄᵯ&᳛ᵯ⊤ḄÊ☢w᪗ᨵ600revs/Kw-hḄÒ᪵.^ᵯ
ÔᨵÕZᵨᵯᘤÖÁA;dᙠ10minᑁᵯ⊤Ḅ§Ê§Ú120§ÕZᵨᵯᘤ3koA.iæᘤB.ᵯçèC.ᵯéêD.ᵯᔿí/ᵫ⚪î34ᵨᵯᘤᡠḄ&gl20600kW-h=0.2kW4ᵨᵯᘤḄ&᳛P=Wt=0.2kWhl060h=l.2kW=1200W2óᔠ⚪îḄÔᨵiæ.ᦑ⌱A.46

46ᦑᫀSA¡⚪ὃöÚᵯ⊤Ḅ÷ᦪḄᳮ/6ᵯḄK{,ᐵúὃöû>üý>þᱥḄ&᳛.⚪Ḅ᧕┯
ᙠᵨᵯ⊤Ḅ⊤ᦪὑḄᵯᓫᣚ.᪆⚪✌ᐜ⌕!''600revs/kWh஻Ḅᱥᳮ%&ᵨᵯᘤὑ1ᓟ)*Ḅᵯᵯ⊤⊤+6001,=3.6x106ᯖᓽlKW*h=3.6xlO6J.16.ᡃ1ᙠ2ὃ*⌕ᵨᑮ2B56789:ᓱᵯᾯ=>?@:A9:ᓱBḄCᫀEFG2B562ḄHIEJ⌱7''MN஻ᡈ''PQN஻RSTᵨUVᔠXḄ2B56ᵫ56ZḄMᵯឋ\J⌱7'']஻ᡈ''^஻R_᪵=Tᵯᾯabcd஺CᫀMNf^᪆:⚪ὃhMNijkᵯlᜧnḄFo஺&ᵨ2B562ḄHI789:ᓱ*ᵫHIEMNpT:ᓱ9qᡂstucd&ᵨUVᔠXḄ2B56ᵫ56ZḄMᵯឋ\^uabT:ᓱ9qᡂstucd஺47